/* color palette from <https://github.com/vuejs/theme> */
:root {
  --vt-c-white: #ffffff;
  --vt-c-white-soft: #f8f8f8;
  --vt-c-white-mute: #f2f2f2;

  --vt-c-black: #181818;
  --vt-c-black-soft: #222222;
  --vt-c-black-mute: #282828;

  --vt-c-indigo: #2c3e50;

  --vt-c-divider-light-1: rgba(60, 60, 60, 0.29);
  --vt-c-divider-light-2: rgba(60, 60, 60, 0.12);
  --vt-c-divider-dark-1: rgba(84, 84, 84, 0.65);
  --vt-c-divider-dark-2: rgba(84, 84, 84, 0.48);

  --vt-c-text-light-1: var(--vt-c-indigo);
  --vt-c-text-light-2: rgba(60, 60, 60, 0.66);
  --vt-c-text-dark-1: var(--vt-c-white);
  --vt-c-text-dark-2: rgba(235, 235, 235, 0.64);
}

/* semantic color variables for this project */
:root {
  --color-background: var(--vt-c-white);
  --color-background-soft: var(--vt-c-white-soft);
  --color-background-mute: var(--vt-c-white-mute);

  --color-border: var(--vt-c-divider-light-2);
  --color-border-hover: var(--vt-c-divider-light-1);

  --color-heading: var(--vt-c-text-light-1);
  --color-text: var(--vt-c-text-light-1);

  --section-gap: 160px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-background: var(--vt-c-black);
    --color-background-soft: var(--vt-c-black-soft);
    --color-background-mute: var(--vt-c-black-mute);

    --color-border: var(--vt-c-divider-dark-2);
    --color-border-hover: var(--vt-c-divider-dark-1);

    --color-heading: var(--vt-c-text-dark-1);
    --color-text: var(--vt-c-text-dark-2);
  }
}

/* 基础样式重置 */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-weight: normal;
}

body {
  min-height: 100vh;
  margin: 0;
  padding: 0;
  line-height: 1.6;
  font-family:
    -apple-system,
    BlinkMacSystemFont,
    'Segoe UI',
    'Helvetica Neue',
    'Arial',
    'PingFang SC',
    'Hiragino Sans GB',
    'Microsoft YaHei',
    sans-serif;
  font-size: 14px;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-color: #f5f7fa;
}

/* 清除默认的列表样式 */
ul, ol {
  list-style: none;
  margin: 0;
  padding: 0;
}

/* 清除默认的按钮样式 */
button {
  border: none;
  outline: none;
  background: none;
  cursor: pointer;
}

/* 清除默认的输入框样式 */
input, textarea {
  border: none;
  outline: none;
  background: none;
}

/* 清除默认的表格样式 */
table {
  border-collapse: collapse;
  border-spacing: 0;
}

/* 图片默认样式 */
img {
  max-width: 100%;
  height: auto;
  vertical-align: middle;
}

/* 链接默认样式 */
a {
  color: inherit;
  text-decoration: none;
}

/* 隐藏元素 */
.hidden {
  display: none !important;
}

/* 文本省略 */
.text-ellipsis {
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

/* Flex布局工具类 */
.flex {
  display: flex;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.flex-column {
  display: flex;
  flex-direction: column;
}
